a_dxf_line.cxx

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/*
Copyright 2002-2011 Pierre SMARS (smars@yuntech.edu.tw)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#include "a_dxf_line.h"
#include "a_dxf_group.h"
 
//---------------------------------------------------------------------------
a_dxf_line::a_dxf_line(std::istream *   file) : a_dxf_entity(file)
{
        x1_ok = false;  y1_ok = false;  z1_ok = false;
        x2_ok = false;  y2_ok = false;  z2_ok = false;
}
//---------------------------------------------------------------------------
bool a_dxf_line::read()
{
        a_dxf_group group(file_);
        layer_ = "0";
        for (;;)
        {
                group.read();
                if (group.code()==8)
                        layer_ = group.data();
                if (group.code()==10) 
                {
                        x1_ = group.data_double();
                        x1_ok = true;
                }
                if (group.code()==20)
                {
                        y1_ = group.data_double();
                        y1_ok = true;
                }
                if (group.code()==30)
                {
                        z1_ = group.data_double();
                        z1_ok = true;
                }
                if (group.code()==11) 
                {
                        x2_ = group.data_double();
                        x2_ok = true;
                }
                if (group.code()==21)
                {
                        y2_ = group.data_double();
                        y2_ok = true;
                }
                if (group.code()==31)
                {
                        z2_ = group.data_double();
                        z2_ok = true;
                }
                if (group.code()==0)
                        break;
        }
        group.putback();
        if (x1_ok && y1_ok && z1_ok && x2_ok && y2_ok && z2_ok)
                return true;
        else
                return false;
}